I have a combuster and a glacius, but really I prefer my glacius xD;.. I don't disturb shivs (SO BASICALLY JUST ISSEN BECAUSE THAT'S ALL HE DOES) It holds the zombies in place for a little while.. It's saved me a bunch of times with freezing them before they hop at me. Oh, and mine has medium on undead so that's a nice little bonus aswell

I'm curious to know if the Voltedge's static would actually prevent the mobs from being pushed back at all if that would be the case then the Voltedge would probably be the superior sword for the situation because you would get the status effect AND the knock back